A ring T-shaped multi-frequency mobile phone antenna

Abstract

The invention discloses a T shape surrounding type multi-frequency mobile phone antenna and provides a planar monopole mobile phone antenna which is simple in structure, easy to machine, low in manufacturing cost and capable of meeting the requirements for miniaturization and multiple frequencies and is capable of meeting the requirement for the 2G frequency band, the 3G frequency band and the 4G frequency band. The T shape surrounding type multi-frequency mobile phone antenna comprises a dielectric layer, grounded metal sheets and a radiation metal sheet, wherein the radiation metal sheet is directly printed on the upper surface of the dielectric layer, the T-shaped radiation metal sheet achieves direct feed, and the metal sheets surrounding the T-shaped radiation metal sheet are directly grounded. According to the T shape surrounding type multi-frequency mobile phone antenna, multiple frequency bands can be covered through the coupling between the T-shaped radiation metal sheet which can achieve direct feed and the grounded metal sheets which surround the radiation metal sheets, large bandwidth is achieved, miniaturization and multiple frequencies of the mobile phone antenna are achieved, the structure is extremely simple, and a lumped element and special substrate materials do not need to be loaded. The T shape surrounding type multi-frequency mobile phone antenna is suitable for 2G / 3G / 4G ultra-thin smart phones.

Description

technical field [0001] The invention belongs to the technical field of antennas, and in particular relates to a ring T-shaped multi-frequency mobile phone antenna. Background technique [0002] The radio frequency signal power output by the radio transmitter is sent to the transmitting antenna through the feeder, and radiated by the antenna in the form of electromagnetic waves. After the electromagnetic wave reaches the receiving point, the receiving antenna receives the radiated electromagnetic wave and sends it to the radio receiver through the feeder. It can be seen that the antenna can be regarded as a sensor that realizes the mutual conversion between radio frequency signals and electromagnetic waves, and is an important radio device for transmitting and receiving electromagnetic waves. Without an antenna, there is no wireless communication. [0003] In recent years, the mobile communication terminal equipment—the mobile phone has become the fastest-growing communicatio...

AI Technical Summary

Problems solved by technology

With the increasing popularity of mobile phones, mobile phones have transformed from pure communication products to consumer electronics products due to the increase in functions. The motivation of many consumers to buy mobile phones is mainly attracted by their functions and designs. , may cause changes or reduce the performance of wireless communication, so it increases the difficulty of designing antennas

[0004]The ever-shrinking mobile phone antenna size means that the height and space of the antenna are compressed, and an efficient antenna must have sufficient height and space to expand the frequency band and efficiency. Although the design trend of the antenna is getting smaller and smaller, the size of the antenna itself still has its physical limitations. If the volume of the antenna is below the standard point, as the volume gradually shrinks, its reception effect It will also become weaker and weaker. Therefore, the miniaturization and multi-frequency design of the antenna is a hot and difficult point in the research of mobile phone antennas today.

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